Tuesday, February18, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Dover, MA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:35AMSunset 5:21PM Tuesday February 18, 2020 1:21 PM EST (18:21 UTC) Moonrise 4:18AMMoonset 1:37PM Illumination 25% Phase: Waning Crescent; Moon at 25 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
    EDIT      (on/off)   Help
ANZ230 Boston Harbor- 116 Pm Est Tue Feb 18 2020
.small craft advisory in effect from Wednesday morning through Wednesday evening...
This afternoon..SE winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. Patchy fog. Rain. Vsby 1 to 3 nm.
Tonight..S winds 5 to 10 kt, becoming W 10 to 15 kt with gusts up to 20 kt after midnight. Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance. Patchy fog. Rain. Vsby 1 to 3 nm.
Wed..W winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft.
Wed night..NW winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft.
Thu and Thu night..NW winds around 10 kt with gusts up to 20 kt. Waves around 2 ft.
Fri through Sat night..W winds 5 to 10 kt. Waves 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
ANZ200 116 Pm Est Tue Feb 18 2020
Synopsis for massachusetts and rhode island coastal waters.. High pres across northern new england early this morning moves east of the region today, as low pres across the eastern great lakes lifts into quebec. A strong cold front crosses the waters Wed with gust northwest winds through Wed night. Large high pres over the central states slowly builds east and passes south of our waters this weekend. For information on possible hazardous weather beyond the 24-36 hour forecast period, please visit www.weather.gov/boston and follow the current hazards link above the map on the left.


7 Day Forecast for Marine Location Near Dover, MA
   Hourly   EDIT   Help
location: 42.27, -71.27     debug


Area Discussion for - Boston, MA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KBOX 181807 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 107 PM EST Tue Feb 18 2020

SYNOPSIS. Low pressure will bring a period of rain mainly this afternoon into this evening, which will begin as a wintry mix across the east slopes of the Berkshires and northern Worcester Hills. Dry weather follows later tonight and it becomes windy on Wednesday behind the passage of a cold front. Blustery and colder, dry weather pattern Wednesday night through Friday with even colder wind chills. Temperatures then moderate back to above-normal levels by the weekend. Next Monday or Tuesday offers the next chance for precipitation.

NEAR TERM /UNTIL 6 PM THIS EVENING/. 1 PM update .

Light to moderate snow has overspread interior MA. Warming in the column will advance north this afternoon with snow changing to rain mid/late afternoon from the Pike northward. Temps hovering around 32 over the higher elevations may result in pockets of freezing rain before temps rise above freezing by early evening.

Previous discussion .

Light snow developing over the west slopes of the Berkshires late this morning. Still some dry air to overcome with dewpoint depressions 10-12 degrees. RAP soundings show this low level dry air but do moisten the low levels 16-18z so expect snow to overspread western New Eng next 1-2 hours. Steady and heavier snow back across central NY along the nose of the 850 mb jet. While the main axis of the low level jet lifts into northern New Eng, increasing low level wind will enhance isentropic lift for steadier precip to overspread SNE this afternoon. Ptype will be mostly rain, but will start as snow over interior MA and possibly briefly over higher terrain in northern CT. Given high pres is east of New Eng, this not a favorable location for locking in low level cold air so expecting an eventual changeover to rain for even the higher elevations.

Best chance for minor snow accum before a change to rain will be over higher elevations in the Berkshires and northern Worcester Hills. The other concern is for perhaps a period of freezing rain as temps hover near freezing for a time. Thermal profiles marginally cold enough for snow or snow/sleet mix interior northern MA through about mid afternoon, then there appears to be a brief window for freezing rain mid/late afternoon over higher elevations. Best chance for any light icing will be over the Berkshires where a winter weather advisory is in effect. Can't rule out an hour or 2 of freezing rain over the Worcester hills but confidence is lower so will continue SPS here.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM WEDNESDAY/. * Dry but windy on Wednesday

Tonight .

Showers and areas of fog will linger during the first part of the evening. A secondary wave will develop across southeast New England and then will lift northeast of the region by late evening. Drier air will work in from the west once the wave lifts to our northeast, so any lingering showers and fog should be confined to the south coast by late evening. Improvement should occur along the south coast, Cape and Islands too after midnight. Low temperatures will only drop into the 30s to near 40 by daybreak in most locations with any at or below freezing readings confined to the high terrain.

Wednesday .

The pressure gradient increases significantly on Wednesday. This a result of intensifying low pressure in the Canadian Maritimes and strong high pressure building into the north Central U.S. This coupled with strong cold advection aloft behind a cold front will result in a dry, but windy day. Northwest wind gusts of 25 to 40 mph are anticipated. Plenty of sunshine will attempt to offset the strong cold advection, so expect temperatures to be mainly in the middle 30s to lower 40s much of the day. However, temps may briefly peak in the middle 40s across southeast New England.

LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/. Highlights .

* Colder, dry weather pattern for mid to late week, with below- normal temperatures and cold wind chills Thurs and Fri.

* Possible ocean-effect snow showers with little accumulation South Shore/Cape Cod late Thu-Fri.

* Warming, moderating temperatures for the weekend with continued dry weather.

Details .

Wednesday Night through Friday:

An upper-level ridge over the west coast of North America results in a period of northwest cyclonic flow aloft across the Great Lakes and Northeast. This northwest flow will draw modified-Arctic air southeastward into the Northeast, leading to a period of colder weather for the latter part of the workweek. Coincident with the colder air mass will be a period of blustery northwest wind conditions which will result in even colder wind chills.

Despite the colder air, the surface pattern is however a dry one as a ridge of high pressure is maintained through this period. Mostly clear to partly cloudy skies should be common in this period, with good radiational cooling at night. Will have to watch for possible ocean-effect SHSN later Thursday night into Friday towards the South Shore and the Cape as low-level flow becomes more favorably NNE and colder air flowing over SSTs in the mid 40s setting the stage for enough instability.

Thermally, 925 mb temps fall to -12 to -14C Wednesday night into Thursday areawide. The coldest period is Thursday night into Friday as the thermal trough builds across New England associated with a potent, though moisture-starved trough in the NW flow. 925 mb temps plummet to around -15 to -17C Thursday night into early Friday, before starting to moderate late in the day on Friday as flow becomes W.

After a cold start with lows in the teens to low 20s Wed night (morning wind chills single digits to 10 above), highs Thurs in the 20s to near freezing. With the coldest air coming in Thurs nite, lows single digits to the teens (Fri AM wind chills around +5 to - 5). Highs Fri in the mid 20s to lower-mid 30s.

Friday Night into Sunday:

Carrying the theme of the winter thus far, the shot of colder air looks to be short-lived/not sustained, with temps moderating back to above-normal levels by the weekend. Surface high pressure builds into the central Appalachians Friday night and then off the mid- Atlantic coast, with a resulting southwest warm advection pattern. A passing Clipper system to our north may increase clouds late Sunday with a wind shift to W but appears to be a dry passage. Highs return into the 40s with lows in the 20s to near freezing for the weekend.

Dry weather pattern looks to continue into the foreseeable future. Per the 00z ECMWF and the Canadian GEM, next chance for precip may not occur until late Monday into early Tuesday as a trough in the southern branch of the jet comes out of the southwest US.

AVIATION /18Z TUESDAY THROUGH SUNDAY/. Forecaster Confidence Levels .

Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent.

18z TAF update .

Through 00z . Conditions deteriorating to IFR with periods of rain. Snow across interior northern MA changing to rain through 21-22z with pockets of FZRA possible in higher elevations. Minor snow accum over higher elevations. Tonight . Moderate confidence. Widespread IFR in rain this evening, with improving conditions to VFR from west to east after midnight. But MVFR cigs lingering over Cape/Islands through daybreak. NW gusts to 25 kt developing over higher elevations after midnight.

Wednesday and Wednesday night . High confidence. VFR. NW wind gusts of 25 to 35 knots.

Wednesday night . High confidence. VFR. Diminishing wind.

KBOS Terminal . Moderate confidence in TAF. Trending to IFR by this evening, improving after midnight.

KBDL Terminal . Moderate confidence in TAF. Trending to IFR late this afternoon, improving around midnight.

Outlook /Thursday through Saturday/ .

Thursday through Saturday: VFR. Breezy.

MARINE. Today . High confidence. A modest southerly LLJ that develops ahead of a shortwave trough should yield SCA SE wind gusts of 25 to 30 knots across most open waters today. Brief 35 knot wind gusts can not be ruled out toward evening across our eastern waters, but felt SCA headlines were more representative. Rain and areas of fog develop later today and especially toward evening. A relatively long southeast fetch should also allow seas to build to between 4 and 9 feet by early evening across the open waters.

Tonight . Moderate to high confidence. Areas of showers and fog this evening should improve after midnight as LLJ shifts east of the region and is replaced by drier air. Some 30 knot southerly gusts early this evening should temporarily diminish and shift more to the west overnight.

Wednesday . High confidence. Northwest wind gusts of 25 to 35 knots develop behind a strong cold front by late morning and afternoon. Opted to go with a Gale Warning for our northeast waters with strong small craft elsewhere. Seas between 4 and 8 feet across the open waters.

Outlook /Wednesday Night through Saturday/ .

Wednesday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas.

Thursday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft.

Thursday Night: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of seas approaching 5 ft.

Friday: Winds less than 25 kt. Seas locally approaching 5 ft.

Friday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.

Saturday: Winds less than 25 kt. Seas up to 5 ft.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . Winter Weather Advisory until 5 PM EST this afternoon for MAZ002-008-009. RI . None. MARINE . Small Craft Advisory until 7 PM EST Wednesday for ANZ231>235- 237-251-254>256. Small Craft Advisory from 8 AM to 7 PM EST Wednesday for ANZ230-236. Gale Warning from 7 AM Wednesday to 1 AM EST Thursday for ANZ250.

SYNOPSIS . Frank/Loconto NEAR TERM . KJC SHORT TERM . Frank LONG TERM . Loconto AVIATION . KJC/Loconto MARINE . Frank/Loconto


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHBM3 - 8443970 - Boston, MA 13 mi58 min 39°F 37°F1026.2 hPa
44013 - BOSTON 16 NM East of Boston, MA 33 mi92 min SE 18 G 23 39°F 41°F4 ft1028.3 hPa (-2.1)31°F
FOXR1 - 8454000 - Providence, RI 33 mi58 min 40°F 37°F1026.5 hPa
PVDR1 34 mi52 min 40°F 1026.5 hPa31°F
CPTR1 - 8452944 - Conimicut Light, RI 38 mi52 min 39°F 39°F1025.8 hPa
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 39 mi52 min 40°F 1026.5 hPa
FRVM3 - 8447386 - Fall River, MA 40 mi58 min 40°F 39°F1026.7 hPa
FRXM3 40 mi58 min 40°F 31°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 41 mi78 min S 19 G 23 39°F 40°F5 ft1026.6 hPa
NAXR1 - Narragansett Bay Reserve, RI 44 mi97 min SE 8 40°F 1028 hPa32°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 44 mi52 min 40°F 1026.5 hPa
PRUR1 46 mi52 min 40°F 33°F
QPTR1 - 8454049 - Quonset Point, RI 48 mi58 min 40°F 39°F1026.3 hPa

Wind History for Providence, RI
(wind in knots)    EDIT      (on/off)   Help
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
Last
24hr
NW8
G14
N11
N13
G16
N9
G16
NW6
G12
N5
G9
NE4
G7
N7
G11
NE1
G6
NE2
--
NE1
SE1
G4
E2
SE2
G5
--
SE1
G4
E2
E4
G7
SE5
G9
SE8
G12
SE8
S11
G16
S11
G14
1 day
ago
W4
G8
SW8
SW5
G9
SW5
G8
SW6
G9
W4
W5
SW3
W3
W1
S1
SW3
NW2
W2
--
S1
--
SW2
NW2
NW3
N9
G12
N11
G15
N9
G14
N6
G11
2 days
ago
S10
S13
G16
S14
G18
S11
G16
SW10
G14
SW10
G13
SW6
G10
SW5
SW6
S3
G6
SW1
SW3
W3
W2
SW4
SW9
G12
W6
G10
SW6
SW4
G8
SW4
SW8
G14
SW9
G12
W9
G12
W4
G9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Norwood, Norwood Memorial Airport, MA8 mi29 minESE 510.00 miOvercast42°F30°F65%1025.6 hPa
East Milton, MA9 mi31 minESE 9 mi36°F30°F79%1026.3 hPa
Laurence G Hanscom Field Airport, MA14 mi31 minESE 73.00 miLight Rain37°F32°F82%1027.2 hPa
Boston, Logan International Airport, MA15 mi28 minSE 156.00 miLight Rain40°F30°F70%1026.2 hPa

Link to 5 minute data for KOWD

Wind History from OWD (wind in knots)
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last 24hrNW12NW8NW10NW7NW5CalmN4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3CalmE6E7SE9E5
1 day agoSW8W4SW7S5W3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW4W7W11NW9
G17
NW13
G17
2 days agoSW6S10S9S9S8S8S8S10SW9SW5SW6SW7SW9S8SW11SW8SW9S7SW9SW10SW8SW7SW8SW8

Tide / Current Tables for Dover St. Bridge, Fort Point Channel, Boston, Massachusetts
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Dover St. Bridge
Click for Map
Tue -- 12:34 AM EST     1.07 feet Low Tide
Tue -- 03:18 AM EST     Moonrise
Tue -- 06:37 AM EST     Sunrise
Tue -- 06:55 AM EST     10.05 feet High Tide
Tue -- 12:35 PM EST     Moonset
Tue -- 01:27 PM EST     0.37 feet Low Tide
Tue -- 05:19 PM EST     Sunset
Tue -- 07:43 PM EST     8.65 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.31.22.23.85.889.6109.58.16.23.91.70.50.51.435.17.28.48.686.74.8

Tide / Current Tables for Boston Harbor, Massachusetts Current
   EDIT      (on/off)   Help   One Week of Data
Boston Harbor
Click for Map
Tue -- 12:26 AM EST     0.00 knots Slack
Tue -- 03:17 AM EST     Moonrise
Tue -- 03:53 AM EST     0.96 knots Max Flood
Tue -- 06:30 AM EST     -0.00 knots Slack
Tue -- 06:36 AM EST     Sunrise
Tue -- 10:58 AM EST     -1.21 knots Max Ebb
Tue -- 12:35 PM EST     Moonset
Tue -- 01:07 PM EST     0.00 knots Slack
Tue -- 04:30 PM EST     0.96 knots Max Flood
Tue -- 05:19 PM EST     Sunset
Tue -- 07:23 PM EST     -0.00 knots Slack
Tue -- 11:27 PM EST     -1.08 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
-0.40.40.70.910.70.2-0.2-0.5-0.8-1.1-1.2-0.9-0.10.50.70.90.90.50.1-0.2-0.5-0.8-1

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of Northeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Boston, MA (13,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Boston, MA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.